Grease-gun for wheel-hubs.



MI N. LUDLOW.

GREASE GUN FOR WHEEL HUBS.

APPLICATION FILED DEC. 8,1913- 1 149 69; 7 Patented Aug. 10, 1915.

2 SHEETSSHEET 1'.

lflzznesses, izvenzor CA ztorney M. N. LUDLOW.

GREASE GUN FOR WHEEL HUBS.

Patented Aug. 10, 1915. g

2 SHEETS-ggT 211/ APPLICATION FILED DEC-8.19M]- I Hll In a? for Z0227:eaa cs:

MARGERY N. LUDLOW, 01E SARATOG-A SPRINGS, NEW YORK.

GREASE-GUN non WHEEL-HUBS.

To all whom it may concern:

Be it known that I, MARGERY N. LuDLow, a citizen of the United States,residing at Saratoga Springs, county of Saratoga, and 5 State of NewYork, have invented certain new and useful Improvements in" Grease- Gnnsfor Wheel-Hubs, of which the following is a specification. I

The invention relates to such improvements and consists in the novelconstruction and combination of parts hereinafter de scribed andsubsequently claimed. Reference may be had to the accompanying drawings,and the reference characters marked thereon, which form a part of thisspecification.

Similar characters refer to similarparts in the several figurestherein.I,

Figure 1 of the drawings is a "View in central longitudinal section ofmy improved grease-gun attached to this hub of an automobilewheel inplace of, the hub-cap, Fig. a similarview of the wheel-hub with'thehub-cap attached thereto. Fig. 3 is a view partly in side elevation andpartly in central rel-cap of the grease-gun detached. Fig. 6

is a central longitudinal section of a greasegun embodying my inventionin modified form.

The principal object of the invention is 85 to quickly and easily injecta filling of grease :into the roller-bearing contained within the hub ofan automobile-wheel.

Referring to the drawings wherein the inventlon is shown in preferredform, 1 is the 4.0 hub of an ordinary automobile-wheel having an openscrew-threaded end adapted to be closed by a hub-cap, 2, in the usualmanner.

Within the hub is a roller-bearing, 3, interposed between the hub andthe axle, 4;. The grease-gun comprises a barrel, 5, interiorlyscrew-threaded to' fit the screw-threaded plunger orpiston, 6, fixedupon a spindle, 7, which pro ects through the cap, 8, at the outer endof the barrel, having its projecting end provided with a handle, 9. Thecap, 8%

is detachablv secured upon'the outer" end the barrel by means of a pairof exteriorly projecting ms, 10, on the barrel whichare adapted to elocated'in an annularinterior t5 groove, 11, in the flange of the cap.The

pins',"10, enter the groove, 11,-through 1on- Specification oiIletter'slatent.

Patented Aug, 1l0, 1915.

Application filed December 8, 1913. Serial No. 805,217.

' gitudinal grooves, 12, as the cap is applied to the barrel by abayonetmovement.

The inner end of the barrel is open and is screwthreaded at 13 toreceive a similarly screwthreaded coupling-ring, 14%, which couplingringis also screw-threaded at 15 to connect with the screw-threaded end ofthe hub, '1, in place of the hub-cap, 2. A plurality of coupling-rings,14;, can thus be made interchangeable to adapt the gun for connectionwith different hubs.

In using the device, the barrel-cap, 8, and the piston, 6, are removedfrom the barrel and the barrel is filled with grease. piston andbarrel-cap are then applied to the barrel, which is attached to the openend of the hub in place of the hub-cap which is temporarily removed. Theaxle may then be jacked up to raise the wheel from the floor or ground.The user then holds the handle, 9, of the gun against rotation, whilethe wheel is rotated or spun in a direction to screw the piston orplunger into the barrel, thus forcing the grease from the barrel intothe hub, all of the open spaces within which may thus be completelyfilled with grease without danger of escape of the grease from the outerend of the hub. To permit of this manner of operation without danger ofunat;

screwing the coupling-ring, 14:, from either the hub or the barrel, allof the screw-threaded connections between the barrel, 5, and theplunger, 6, and ring, 14, are pitched in the same direction as thescrew-threads on the hub, whereby said operation tends to tighteninstead of to unscrew the gun from the hub. If desired the plunger, 16,and interior of the barrel, 17, may be made plain, and the spindle, 18,screw-threaded to fit a screw-threaded aperture in the barrel-cap, 19,as shown in Fig. 6, thus efi'ecting a screwthreaded conn 'on between theplunger and the barrel What I claim as new and desire to secure byLetters PatentEis- 1. The combination with a wheel-hub having an openscrewsthreaded outer end adapted to receive ahub-cap; of a grease-gunhaving a screw-threaded open end adapted to fit said screw-threaded endof the hub interchangeably with the hub-cap.

2. In a device of the class described, and in combination, a barrelhaving a screwthreaded open end; a plunger within the barrel; means forforcing the plunger toward the open end of the barrel; and a The g ringscrew-threaded to fit the screw-threaded open end of the barrel and alsoscrewthreaded to fit the screw-threaded open end of a wheel-hubinterchangeably with the hub-cap. v

3. The combination with a wheel-hub having an open screw-threaded outerend adapted to'receive a screw-threaded hub-cap; of. a grease-guncomprising a barrel having a.

screw-threaded open end adapted to fit said screw-threaded end of'thehub interchangeable with the hub-cap, a piston having a i vscrew-threaded connection with the barrel pitched in the same directionas the screwthread on the hub, and a handle for prevent- 15 JA$ F.SWARTwoUT, Jr.

